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Polymers 2017, 9(7), 243; doi:10.3390/polym9070243

Fracture Failure Mechanisms of Long Single PA6 Fibers

1
School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710000, China
2
School of Agricultural Equipment Engineering, Henan University of Science and Technology, Luoyang 471023, China
3
School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China
*
Author to whom correspondence should be addressed.
Academic Editor: Mohamed Khayet
Received: 19 May 2017 / Revised: 19 June 2017 / Accepted: 20 June 2017 / Published: 23 June 2017
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Abstract

The present study investigates the failure mechanisms of industrial fiber materials, using a custom designed fiber cutting performance test bench. The fracture morphologies of single PA6 fibers are examined by scanning electron microscopy. The analysis reveals that fiber cutting can be distinguished according to four distinct stages of fiber failure represented by shearing, cutting, brittle fracture, and tensile failure, which are the result of different mechanisms active during the processes of crack initiation, extension, and fracture. The results of fractographic analysis are further verified by an analysis of the blade assembly speed with respect to time over the entire fracture failure process based on high-speed camera data. The results of fractographic analysis and blade assembly speed are fully consistent. View Full-Text
Keywords: single fiber; cutting; fracture morphology; failure mechanism single fiber; cutting; fracture morphology; failure mechanism
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Ding, H.; Zhang, Y.; He, Z. Fracture Failure Mechanisms of Long Single PA6 Fibers. Polymers 2017, 9, 243.

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